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目的 调查西藏拉萨市林周县40岁及以上人群中盲患率和白内障盲人手术覆盖率及盲人社会负担率。方法 2000年4月采用整群随机抽样方法对林周县44个自然村3071例40岁及以上人群进行视力和眼部检查。结果 检录40以上共3346。受检率为91.8％(3071/3346)。以双眼日常生活视力<0.1为标准,盲患病率3.3％(101/3071)。白内障是致盲的主要原因,有64.4％(65/101)的双眼盲人致少有1眼是白内障。白内障手术率覆盖率为63.0％(85/135)。白内障盲人的社会负担率为4.4％。结论 高原地区盲患病率较高,白内障是致盲的主要原因,白内障所造成的社会负担较重。
Objective To investigate the prevalence of blindness and cataract blindness in 40-year-olds and above in Linzhou County, Lhasa, Tibet, and the social burden of blind people. Methods A cluster random sampling method was used in April 2000 to examine the visual acuity and eye examination of 3071 40-year-olds and above in 44 villages in Linzhou County. The results of a total of more than 40 records of 4046. The examination rate was 91.8% (3071/3346). With eyesight of daily living <0.1 as the standard, the prevalence of blindness was 3.3% (101/3071). Cataracts are the main cause of blindness, with 64.4% (65/101) of the blind eyes causing less eye cataracts. Cataract surgery coverage rate was 63.0% (85/135). The social burden of cataract blindness was 4.4%. Conclusions The prevalence of blindness in the plateau area is high. Cataracts are the main cause of blindness. Cataracts have a heavy social burden.